This volume of the Quantum Economics Textbook Series is devoted to quantum human economics. For more than a century, mainstream economics has imagined its object as a clockwork: an agent is endowed with complete and stable preferences and full information, solves for a unique optimum under given constraints, and the market glides toward equilibrium along a mechanical orbit. With the solemnity of its logic and the beauty of its geometry, this system has become the gateway through which generation after generation enters the discipline. Yet precisely at the foundation of this system the cracks have grown unmistakable. Classical models, at the level of their axioms, delete superposition, interference, entanglement, measurement collapse, and the waxing and waning of coherence; they therefore struggle to accommodate multiple equilibria, path dependence, network effects, herding, critical collapse, and deep uncertainty. The quantum reconstruction offered here does not treat quantum physics as an ornamental metaphor. It re-founds, on the ground of practical ontology, the mathematical and conceptual architecture that quantum theory has forged for a complex world, and transplants it onto quantum human economics. Classical and neoclassical insights are recovered as special cases in the limit of complete decoherence. The whole book unfolds in a unified state-operator-evolution formalism. Each chapter first explains the classical theory thoroughly, then presents an original quantum construction, rigorous derivation, a real historical case, and figures and tables are drawn expressly to support the argument. The book suits undergraduates building intuition, graduate students and researchers advancing to the frontier, and practitioners in policy and business.
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